diff --git a/lib/Target/IA64/IA64TargetMachine.h b/lib/Target/IA64/IA64TargetMachine.h
index 07d581b3de2..7a83b839e4a 100644
--- a/lib/Target/IA64/IA64TargetMachine.h
+++ b/lib/Target/IA64/IA64TargetMachine.h
@@ -34,7 +34,7 @@ public:
 
   virtual const IA64InstrInfo      *getInstrInfo() const { return &InstrInfo; }
   virtual const TargetFrameInfo    *getFrameInfo() const { return &FrameInfo; }
-  virtual       IA64TargetLowering *getTargetLowering()  { return &TLInfo; }
+  virtual       IA64TargetLowering *getTargetLowering() const { return &TLInfo; }
   virtual const MRegisterInfo    *getRegisterInfo() const {
     return &InstrInfo.getRegisterInfo();
   }